| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,707 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,692 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.90 | 83,589 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,694,596 |
| US States with an Empty Map | 0 | - | 5.00 | 626,705 |
| Random U.S. States on a Map | 0 | - | 4.96 | 628,562 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,885 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,875 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,348 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,073 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,791 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 145,049 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,342 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,187 |
| US States Quiz | 0 | - | 5.00 | 16,940,210 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,454 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,011 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,837 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,707 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,096 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,723 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,818 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 176,840 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,843 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,120 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 580,234 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,354 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,343 |
| Megacities on a World Map | 0 | - | 4.98 | 255,790 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,273 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,921 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,887 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,444 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.48 | 63,512 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,992 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,394 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,564 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,376 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,079 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,410 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,220 |
| Hottest U.S. State Capitals | 0 | - | 4.77 | 29,259 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,540 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,049 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,001 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,308 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,377 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,469 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,692 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,618 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 94,000 |
| Pixelated United States Map | 0 | - | 4.88 | 94,551 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,355 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,569 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,268 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,389 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,871 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,968 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,702 |
| Biggest Cities in the World | 0 | - | 4.91 | 802,471 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,135 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,214 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,401 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,698 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,886 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,363 |
| Biggest Cities in California | 0 | - | 4.35 | 140,149 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,212 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,561 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,555 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,871 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,411 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,513 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 91,147 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,725 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,361 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,352 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,640 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,335 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,082 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,659 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,043 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,275 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,463 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,159 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,283 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,356 |
| Which City in Canada? | 0 | - | 4.83 | 57,206 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,687,529 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,300 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,027,334 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,440 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,412 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,742 |
| North America Map Quiz | 0 | - | 4.98 | 249,998 |
| Central American Countries | 0 | - | 4.98 | 156,952 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,839 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,040 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,094 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,012 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,214 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,477 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,439 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,767 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,692 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,948 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,710 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,668 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,494 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,420 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,712 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,854 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,107 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,302 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,367 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,538 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,713,619 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,535 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,784 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,437 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,000 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,075 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,894 |
| Biggest Cities in Texas | 0 | - | 4.29 | 119,496 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 147,633 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,997 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,380 |
| Biggest Cities in Florida | 0 | - | 4.25 | 72,249 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,259 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,818 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,559 |
| Biggest Cities in New York State | 0 | - | 4.32 | 59,798 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,232 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,584 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,377 |
| Biggest Cities in Ohio | 0 | - | 4.38 | 48,870 |
| Biggest Cities in Pennsylvania | 0 | - | 4.13 | 45,469 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,338 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,422 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,928 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,321 |
| Biggest Cities in Arizona | 0 | - | 4.30 | 31,746 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,443 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,946 |
| Biggest Cities in Illinois | 0 | - | 4.36 | 27,001 |
| Biggest Cities in Wisconsin | 0 | - | 4.46 | 25,224 |
| Biggest Cities in Virginia | 0 | - | 4.22 | 25,227 |
| Biggest Cities in Massachusetts | 0 | - | 4.39 | 30,665 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,464 |
| Biggest Cities in Indiana | 0 | - | 4.24 | 27,095 |
| Biggest Cities in Tennessee | 0 | - | 4.26 | 20,948 |
| Biggest Cities in Alaska | 0 | - | 4.29 | 25,950 |
| Biggest Cities in Missouri | 0 | - | 4.25 | 17,460 |
| Saint Lucia Country Quiz | 0 | - | 4.68 | 18,116 |
| Africa Capitals Quiz | 0 | - | 4.99 | 741,012 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,922 |
| Europe Capital to Country | 0 | - | 4.99 | 251,261 |
| Official Cities in the UK | 0 | - | 4.89 | 284,994 |
| World Capitals by Map | 0 | - | 5.00 | 288,118 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,365 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,934 |
| Random European Capital to Country | 0 | - | 4.98 | 191,662 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,848 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,941 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,103 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,118 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 149,877 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,064 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 41,097 |
| U.S. State Capitals Closest to Mexico | 0 | - | 4.58 | 42,907 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,516 |
| U.S. State Capitals Closest to Canada | 0 | - | 4.64 | 34,012 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,766 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,395,526 |
| Flags of North and South America | 0 | - | 4.99 | 375,084 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,810 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,834 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,495 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,115 |
| Random African Countries on a Map | 0 | - | 4.99 | 297,106 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,031 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,677 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,687 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,507 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,918 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,129 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 170,546 |
| U.S. States By Population | 0 | - | 4.92 | 153,837 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,910 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,407 |
| States of Mexico | 0 | - | 4.96 | 177,230 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,055 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,893 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,224 |
| Most Visited U.S. States by Canadians | - | - | 4.74 | 60,894 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,342 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,372 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,854 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,843 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,501 |
